Ask me Anything about GMAT Critical Reasoning Hello and welcome to my CR Expert Topic . Let me know if you have any CR questions I can help with - strategy, specific ones, etc. You may know me from forum discussion - I am one of the resident CR Experts on GMAT Club. I have over 8,000 posts and 22,000 Kudos. I hope you find my replies and explanations helpful. If you have any specific questions about Critical Reasoning in General such as strategy/approach, feel free to post them here and I will be happy to address them. I intend to have this thread be as a "Everything You Need to Know about CR" type of thread. If you have questions about a specific CR question and why something does not seem right, please post a link here for me with your specific question/concern. Please do not double-post - that's not polite and against the GMAT Club rules. Thank you all - good luck on the GMAT and look forward to seeing you in the CR forum! Karishma.

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warrior1991

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04 Oct 2020, 18:49

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https://gmatclub.com/forum/harvester-an ... s#p2634261

Hi Karishma,

Please help on this one.

KarishmaB

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05 Oct 2020, 00:26

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jabhatta2

MediaCritic: Network executives allege that television viewership is decreasing due to the availability of television programs on other platforms, such as the internet and mobile devices. These executives claim that declining viewership will cause advertising revenue to fall and networks will thus be unable to spend the large sums necessary to produce high quality programming. That development, in turn, will lead to a death of programming for the very devices that cannibalized television audience. However, research shows that users of alternative platforms are exposed to new programs and, as a result, actually increase the numbers of hours per week that they watch television. This demonstrates that alternative platforms will not prevent networks from increasing advertising revenue.

Why is the bold face 2 considered a premise of the Media Critic and not a conclusion of the Media Critic ?

I thought given the word "As a result" -- it was to be considered a conclusion or an intermediate conclusion...

Hey jabhatta2,

Check here: https://gmatclub.com/forum/mediacritic- ... l#p2634482

KarishmaB

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05 Oct 2020, 00:29

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jabhatta2

Hi - my question is a bit technical

Per the argument below, does the new distribution service now deliver products now in
- 2 days
OR
- 1 day ?

------------------------------------

Super Express Shipping Company has implemented a new distribution system that can get almost every package to its destination the day after it is sent. The company worries that this more efficient system will result in lower sales of its premium next-day delivery service, because its two-day service will usually arrive the following day anyway. The company plans to encourage sales of its next-day service by intentionally delaying delivery of its two-day packages so that they will not be delivered the following day, even if the package arrives at its destination city in time for next-day delivery.

The company's plan assumes that

(A) deliberate delay of packages will not affect the company's image in a way that significantly reduces its ability to attract and retain customers
(B) most people do not have a preference for either two-day or next-day delivery
(C) if the plan is not implemented, the company would lose more money in lost sales of overnight deliveries than it would save with its new efficient distribution system
(D) the overnight service is too expensive to be attractive to most customers currently
(E) competing companies' delivery services rarely deliver packages to their destination earlier than their promised time

Hey jabhatta2,

The new system is capable of delivering almost all packages in 1 day. But that will jeopardise the use of 'next day delivery (1 day delivery)' feature which supposedly has a premium to it because current 2 days delivery will also become 1 day due to the efficiency of the new system. So the plan is to hold the regular packages and deliver in 2 days only (even though 1 day is possible with the new system). This will ensure that people who want it in 1 day pay premium to get in 1 day.

KarishmaB

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05 Oct 2020, 00:39

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Mizar18

Dear VeritasKarishma

Can you help me understanding the difference between these 2 sentences or are they conveying the same meaning?

1) Only propositions that can be proven true by observation can be known to be true.

2) Knowing a proposition to be true requires proving propositions true by observation.

I tried to sketch the difference by making a parallel example:

3) Only this type of chocolate can be included in the recipe.
4) The recipe requires this type of chocolate.

So, While 3) gives further information about the type of chocolate/recipe, the second one gives us a necessary condition for the recipe to be done. Does the same applies to 1) - 2) examples?

Best,

Hey Mizar18,

Effectively, there is very little difference between them.
1 says "ability to be proven true by observation" is necessary for "ability to be true".
2 says "proving true by observation" is necessary for "knowing true"

So 1 gives a potential situation and 2 gives the situation in action.
Rest depends on context. It's usually not very fruitful to evaluate statements in isolation.

KarishmaB

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05 Oct 2020, 01:49

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warrior1991

https://gmatclub.com/forum/harvester-ant-colonies-live-for-fifteen-to-twenty-years-though-indivi-321886.html?fl=notifications#p2634261

Hi Karishma,

Please help on this one.

Hey warrior1991,

Done.
https://gmatclub.com/forum/harvester-an ... l#p2634565

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05 Oct 2020, 19:52

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Hello Karishma mam

Need urgent help on :
https://gmatclub.com/forum/some-theoris ... l#p2635110

Please check VeritasKarishma

KarishmaB

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08 Oct 2020, 04:57

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imSKR

Hello Karishma mam

Need urgent help on :
https://gmatclub.com/forum/some-theoris ... l#p2635110

Please check VeritasKarishma

Hey imSKR,

I see another expert has already addressed your query. If you still have doubts, please let me know.

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08 Oct 2020, 10:19

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VeritasKarishma

imSKR

Hello Karishma mam

Need urgent help on :
https://gmatclub.com/forum/some-theoris ... l#p2635110

Please check VeritasKarishma

Hey imSKR,

I see another expert has already addressed your query. If you still have doubts, please let me know.

Thanks Mam for always replying:) and kind support

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11 Oct 2020, 17:29

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VeritasKarishma ma'am,

I selected B as the correct choice.
Could you please shed some light on why this is the incorrect choice. Also, why is A correct.

https://gmatclub.com/forum/due-to-the-r ... 63901.html

Thanks!

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12 Oct 2020, 16:32

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Hi VeritasKarishma / experts - how would you eliminate C and D specifically in this

The OA is E

Thank you for everything !
===================

Physician: Goliath Pharmaceutical Company has claimed that the recent increase in the number of diagnosed cases of Disease X shows that the disease is increasing in virulence. This is a questionable argument, just as it would be incorrect to claim that our increased success rate in treating patients with Disease X is due to the disease becoming less virulent. The real cause of both increases is a newly introduced screening process that reduces misdiagnoses of patients infected with the Disease X pathogen.

The Physician’s statements, if accurate, provide the most support for which of the following as a conclusion?

(A) The new screening procedure is the reason that more people are requesting to be tested for Disease X.
(B) It is not possible to determine that a patient has Disease X without using the new screening process.
(C) The increase in diagnosed cases of Disease X is proportional to the increase in the number of clinics utilizing the new screening procedure.
(D) The new screening process occasionally diagnoses patients with Disease X when they are actually suffering from another illness.
(E) The increase in the number of diagnosed cases of Disease X is not due to an increase in the disease’s virulence.

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13 Oct 2020, 06:42

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Hello VeritasKarishma

I have this question from Veritas prep only

In the country of Bedenia, officials have recently implemented a new healthcare initiative to reduce dangerous wait times at emergency rooms in the country’s hospitals. This initiative increases the number of available emergency nurses and doctors in urban settings: scholarships and no-interest loans are being offered to prospective students in these fields if they work in major city hospitals, relocation packages to urban centers are being offered for current emergency practitioners, and immigration rules are being changed to enable foreign emergency doctors and nurses to more easily move to Bedenia’s major cities.

Which of the following would be most important to determine in assessing whether the initiative will be successful?

A. What percentage of current nurses and doctors work in emergency medicine
B. Which hospitals in Bedenia have dangerous wait times in their emergency rooms
C. Whether a career in emergency medicine pays substantially less than other types of medicine
D. Whether wait times could be reduced by means other than increasing the number of available nurses and doctors
E. Whether many foreign doctors and nurses are currently not allowed to enter Bedenia

I would like to know your thought process on this, thanks!

KarishmaB

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14 Oct 2020, 05:57

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SiffyB

Hey SiffyB,

https://gmatclub.com/forum/due-to-the-r ... l#p2641114

KarishmaB

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14 Oct 2020, 05:57

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jabhatta2

Hey jabhatta2,

https://gmatclub.com/forum/physician-go ... l#p2641097

KarishmaB

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15 Oct 2020, 04:03

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jainsaheel

Hey jainsaheel,

Here you go:
https://gmatclub.com/forum/in-the-count ... l#p2641720

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17 Oct 2020, 14:24

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hey karishma i would like to ask something, someone who aiming v33-35 on real test what difficulty questions should face?

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19 Oct 2020, 05:48

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verbal35

hey karishma i would like to ask something, someone who aiming v33-35 on real test what difficulty questions should face?

If you get most of the 600-700 level questions correct, V35 should be within range.

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19 Oct 2020, 06:01

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Hi VeritasKarishma,

Psychologist: In a study, researchers gave 100 volunteers a psychological questionnaire designed to measure their self-esteem. The researchers then asked each volunteer to rate the strength of his or her own social skills. The volunteers with the highest levels of self-esteem consistently rated themselves as having much better social skills than did the volunteers with moderate levels. This suggests that attaining an exceptionally high level of self-esteem greatly improves one’s social skills.

The psychologist’s argument is most vulnerable to criticism on which of the following grounds?

(A) It fails to adequately address the possibility that many of the volunteers may not have understood what the psychological questionnaire was designed to measure.

(B) It takes for granted that the volunteers with the highest levels of self-esteem had better social skills than did the other volunteers, even before the former volunteers had attained their high levels of self-esteem.

(C) It overlooks the possibility that people with very high levels of self-esteem may tend to have a less accurate perception of the strength of their own social skills than do people with moderate levels of self-esteem.

(D) It relies on evidence from a group of volunteers that is too small to provide any support for any inferences regarding people in general.

(E) It overlooks the possibility that factors other than level of self-esteem may be of much greater importance in determining the strength of one’s social skills.

I followed the post on this question and I just have a basic question regarding CONCLUSION indicators.

The word "suggests" doesn't mean prove as per the post on the forum. It just means implies.
In such cases we have to take "evidence" or report or statistics to be reliable. Only in the cases when you have a prove or clearly or it shows, we can question the integrity of the report. Is that correct ?
So if it were "clearly" then I could pick option D.

Also is the approach right. I considered the argument an experiment.
And the flaws around
1) Other factors lead to better social skills. (E is wrong shell game because is talks of "importance" and "strength" ???)
2) That better social skills and high level of self esteem are just a correlation.
3) Reverse
4) Had there been 2 groups we could speak of disparity among the groups being offered the questionnare.

Request you to kindly help with this one

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21 Oct 2020, 01:01

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kagrawal16

"suggests" shows a hypothesis on the basis on some data. To criticise you need to suggest that the link may not exist.

Read the argument carefully. You will expect the correct option then.
Researchers measured self esteem. Then they asked the participants to rate their own social skills (the researchers did not measure social skills).
They found high self esteem and better social skills existed together.

The hypothesis that high self esteem leads to better social skills is flawed in many ways - first of all, you asked people about their social skills. High esteem people may rate themselves highly (with good reason - they have high self esteem).

If the researchers had measured both self esteem and social skills and then found the co-relation, then yes, you could have argued that one may not be the cause of another.

As for your question - if we were concluding the hypothesis, then a small sample size would be a valid argument against is - the answer is yes. If the researchers tried to establish something based on a small sample size, you could argue that the sample size is too small.

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30 Oct 2020, 09:59

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Hi ma'am,

What's your take on this: https://gmatclub.com/forum/hatfield-air ... 38841.html

I was torn between (A), (C) and (E). All seem to be reasonable assumptions acc to me. Is this even a GMAT-worthy question?

KarishmaB

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05 Nov 2020, 00:48

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SiffyB

SiffyB - Done.
The question is fine. It has one unambiguous answer. Check the link.

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